/Engine/Source/Runtime/Engine/Public/Materials/MaterialRenderProxy.h
Finds theFMaterialto use for rendering thisFMaterialRenderProxy. Will fall back to a default material if needed due to a content error, or async compilation. Will always return a validFMaterial, but unlike GetMaterialWithFallback,FMaterial's shader map may be incomplete
const [FMaterial](API\Runtime\Engine\FMaterial) & GetIncompleteMaterialWithFallback ( [ERHIFeatureLevel::Type](API\Runtime\RHI\ERHIFeatureLevel__Type) InFeatureLevel ) const